PEG-8 stearate

Not rated

New ingredients

No known benefits

PEG-8 stearate at a glance

  • An emulsifier and cleansing agent made from stearic acid
  • Improves product stability
  • Often used in blends with fatty alcohols and acids
  • May be synthetic or animal-derived

PEG-8 stearate description

PEG-8 stearate is the polyethylene glycol (that’s what “PEG” stands for) ester of stearic acid, a fatty acid made synthetically or derived from animals. It’s used in cosmetics for its cleansing (surfactant) and emulsifying properties. Usage levels of PEG-8 stearate in cosmetics range from 1–15%, depending on formulary needs. It is considered safe as used in both rinse-off and leave-on cosmetics.

PEG-8 stearate references

  • Toxicological Research, June 2015, pages
  • International Journal of Toxicology, October 2001, pages 27–38

Peer-reviewed, substantiated scientific research is used to assess ingredients in this dictionary. Regulations regarding constraints, permitted concentration levels and availability vary by country and region.

Ingredient ratings


Proven and supported by independent studies. Outstanding active ingredient for most skin types or concerns.


Necessary to improve a formula's texture, stability, or penetration.


Generally non-irritating but may have aesthetic, stability, or other issues that limit its usefulness.


There is a likelihood of irritation. Risk increases when combined with other problematic ingredients.


May cause irritation, inflammation, dryness, etc. May offer benefit in some capability but overall, proven to do more harm than good.


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Not rated

We have not yet rated this ingredient because we have not had a chance to review the research on it.